Martin Below <machtin.be...@googlemail.com> writes:
> test=# select count(*) total, count(distinct client_id) ids,
> count(distinct expires_on) dates from ps;
> total | ids | dates
> --------+--------+--------
> 213645 | 123366 | 213549
That says the expires_on column is practically unique, which makes me
think the planner is indeed making the right choice.
regards, tom lane
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